We were in another appartment and wanted to extend our stay, but it was full so K.Inthanom suggested us to book and move in another apartment, Bangkok 21 Central located in the same floor and building. Our stays 2 weeks in both apartments, including suite 12CS was absolutely delightful. The rooms are spacious, tastefully furnished and every basic necessity is provided for. The beds are comfortable and it's so convenient to have two full bathrooms and another half-bathroom.
The kitchen is large and fully equipped, plus the washer and dryer.
It was great to have access to the pool and fitness center, and the great location right next to the BTS Skytrain made it easy to get around Bangkok. There is also an extensive open-air market for all kinds of food, clothing and other items, and Villa Market (Supermarket with international food and products) is just down the Street.
All in all, I rate this accommodation "Premium Airbnb". I'm recommending it to friends and We hope to stay here again on our future family trips to Bangkok.